I am pretty sure the problem is with xbmp! I have has the exact same problem and never resolved it. I even reinstalled xbmp onto my xbox and it still didn't work. It might be flash fxp but I highly doubt it since it works with evox and I have had it work with xbmp and then it didn't and I never changed my flash fxp settings. Anyways here is a great solution I used. I switched to the Avalaunch dashboard. The user interface is less cluncky compared to evox plus it supports file sharing from xbox to xbox. NO COMPUTER NEEDED. As long as both xbox's are running avalaunch you can just plug in a crossover cable(xbox system link cable) between them and copy and move files. It transfers a little faster then when using xbmp. The file manager looks very similar to boxplorer(easy to use). Also when you scroll through your games with avalaunch it shows a pretty picture of the game I think the latest version of avalaunch is 0.48.4. Its a great dashboard and easy to switch from evox to avalaunch.